Well you will definitely experience longer stops with the added 2500lbs. On flat level ground, not much difference especially if you anticipate and begin braking easy and early.
Guessing your Sport has the factory 16" wheels? If so it's got the larger of the 2 factory rotors yet it's still going to feel taxed on either repeated in-town stops and/or on downhill stops and down mountain passes.
Safety First - I'd make the attempt at adding wiring for the brakes, it just makes sense with your family riding along. Luck.
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2001 Limited 4WD - 369+K - SunfireRed\Thunder Cloud; - 265/75/16 Michelin A/T2s - Fat Pat's 1.5" BL - StopTech ANGLED rotors - In series 699 trans cooler, New Yota1 transmission, All new OEM suspension front to rear.
